From owner-freebsd-bugs@freebsd.org Fri Mar 29 16:15:46 2019 Return-Path: Delivered-To: freebsd-bugs@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id A7F98156DB67 for ; Fri, 29 Mar 2019 16:15:46 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from mailman.ysv.freebsd.org (mailman.ysv.freebsd.org [IPv6:2001:1900:2254:206a::50:5]) by mx1.freebsd.org (Postfix) with ESMTP id 3E7AD6C999 for ; Fri, 29 Mar 2019 16:15:46 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: by mailman.ysv.freebsd.org (Postfix) id EC299156DB66; Fri, 29 Mar 2019 16:15:45 +0000 (UTC) Delivered-To: bugs@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id D95C5156DB65 for ; Fri, 29 Mar 2019 16:15:45 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from mxrelay.ysv.freebsd.org (mxrelay.ysv.freebsd.org [IPv6:2001:1900:2254:206a::19:3]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) server-signature RSA-PSS (4096 bits) client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "mxrelay.ysv.freebsd.org", Issuer "Let's Encrypt Authority X3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 710AD6C993 for ; Fri, 29 Mar 2019 16:15:45 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from kenobi.freebsd.org (kenobi.freebsd.org [IPv6:2001:1900:2254:206a::16:76]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mxrelay.ysv.freebsd.org (Postfix) with ESMTPS id A68181105C for ; Fri, 29 Mar 2019 16:15:44 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from kenobi.freebsd.org ([127.0.1.118]) by kenobi.freebsd.org (8.15.2/8.15.2) with ESMTP id x2TGFi9m006799 for ; Fri, 29 Mar 2019 16:15:44 GMT (envelope-from bugzilla-noreply@freebsd.org) Received: (from www@localhost) by kenobi.freebsd.org (8.15.2/8.15.2/Submit) id x2TGFi7d006798 for bugs@FreeBSD.org; Fri, 29 Mar 2019 16:15:44 GMT (envelope-from bugzilla-noreply@freebsd.org) X-Authentication-Warning: kenobi.freebsd.org: www set sender to bugzilla-noreply@freebsd.org using -f From: bugzilla-noreply@freebsd.org To: bugs@FreeBSD.org Subject: [Bug 236864] sys/netpfil/pf/ioctl/validation:addtables triggered a GPF panic Date: Fri, 29 Mar 2019 16:15:44 +0000 X-Bugzilla-Reason: AssignedTo X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: Base System X-Bugzilla-Component: kern X-Bugzilla-Version: CURRENT X-Bugzilla-Keywords: X-Bugzilla-Severity: Affects Only Me X-Bugzilla-Who: kp@freebsd.org X-Bugzilla-Status: New X-Bugzilla-Resolution: X-Bugzilla-Priority: --- X-Bugzilla-Assigned-To: bugs@FreeBSD.org X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: Message-ID: In-Reply-To: References: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: https://bugs.freebsd.org/bugzilla/ Auto-Submitted: auto-generated MIME-Version: 1.0 X-BeenThere: freebsd-bugs@freebsd.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Bug reports List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 29 Mar 2019 16:15:46 -0000 https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D236864 --- Comment #2 from Kristof Provost --- It appears to be reproducible by running the pf tests (/usr/tests/sys/netpfil/pf, not just the ioctl tests) in a loop. The backtrace suggests this is a generic issue with setting up or tearing d= own interfaces rather than something specific to pf though. This panics in ifunit_ref(), because while we're iterating the list of interfaces (and have the NET_EPOCH held) we run into a freed interface: #16 0xffffffff80cdcce1 in ifunit_ref (name=3D0xfffffe009dfae7e0 "epair0b") = at /usr/src/sys/net/if.c:2422 2422 if (strncmp(name, ifp->if_xname, IFNAMSIZ) =3D=3D 0= && (kgdb) p name $1 =3D 0xfffffe009dfae7e0 "epair0b" (kgdb) p ifp $2 =3D (struct ifnet *) 0xdeadc0dedeadc0de I'd assume that means some other part of the code has free()d the interface without going through the appropriate 'wait until the epoch is over' callba= ck. --=20 You are receiving this mail because: You are the assignee for the bug.=